title: Development of an implantable wireless ECoG 128ch recording device for clinical brain machine interface.
abstract: Brain Machine Interface (BMI) is a system that assumes user's intention by analyzing user's brain activities and control devices with the assumed intention. It is considered as one of prospective tools to enhance paralyzed patients' quality of life. In our group, we especially focus on ECoG (electro-corti-gram)-BMI, which requires surgery to place electrodes on the cortex. We try to implant all the devices within the patient's head and abdomen and to transmit the data and power wirelessly. Our device consists of 5 parts: (1) High-density multi-electrodes with a 3D shaped sheet fitting to the individual brain surface to effectively record the ECoG signals; (2) A small circuit board with two integrated circuit chips functioning 128 [ch] analogue amplifiers and A/D converters for ECoG signals; (3) A Wifi data communication & control circuit with the target PC; (4) A non-contact power supply transmitting electrical power minimum 400[mW] to the device 20[mm] away. We developed those devices, integrated them, and, investigated the performance.
authors.forename: Kojiro
authors.initials: K
authors.lastname: Matsushita
authors.forename: Masayuki
authors.initials: M
authors.lastname: Hirata
authors.forename: Takafumi
authors.initials: T
authors.lastname: Suzuki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ando
authors.forename: Yuki
authors.initials: Y
authors.lastname: Ota
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Sato
authors.forename: Shyne
authors.initials: S
authors.lastname: Morris
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yoshida
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Matsuki
authors.forename: Toshiki
authors.initials: T
authors.lastname: Yoshimine
mesh_terms: D000005:Abdomen / Q000473:pathology; D000669:Amplifiers, Electronic; D000818:Animals; D001921:Brain / Q000473:pathology*; D062207:Brain-Computer Interfaces; D011211:Electric Power Supplies; D004566:Electrodes; D004567:Electrodes, Implanted; D004569:Electroencephalography / Q000295:instrumentation*; D004867:Equipment Design; D005260:Female; D006257:Head / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D010243:Paralysis / Q000503:physiopathology*; D019736:Prostheses and Implants; D012815:Signal Processing, Computer-Assisted; D014025:Titanium / Q000737:chemistry; D059015:Wireless Technology
chemical_list: D014025:Titanium